Introduction to the Zhugang Japanese Fortress Site: Chaichong Village is located in the eastern part of Sanggang Township, 1.5 kilometers away from Huanhu North Road. It is adjacent to Dayang Town in the east, facing Science Island in the south across the road, and Zhu Gang in the west. The ruins of the Japanese gun tower on the hillside are connected to the main canal of the Chu River in the north.